Metals and Materials International
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Effect of Intercritical Annealing Conditions on Grain Growth Kinetics of Dual Phase Steel
Metals and Materials International - Tập 25 - Trang 1039-1046 - 2019
The study of grain coarsening and its kinetics during intercritical annealing is of vital importance for the production of dual phase (DP) steels with appropriate microstructure and properties required for industrial applications. In the present work, the kinetics of grain growth in the two-phase austenite plus ferrite region was studied based on the parabolic grain growth law. It was revealed tha......
Nanotwinned Microstructure Engineering of Electroplated Copper for Enhanced Anti-corrosion in Alkaline Medium
Metals and Materials International - Tập 30 - Trang 104-112 - 2023
Electroplated copper is a key electronic interconnect material in integrated circuits and printed circuits and inevitably exposed to corrosive media in manufacturing processes. The present work reports, for the first time, that corrosion resistance of electroplated copper in 4 wt% NaOH is enhanced via nanotwinned microstructure engineering. Nucleation and growth of oxide/hydroxide on nanotwinned c......
Multi-scale simulation study for growth dynamics of irreversible islands during submonolayer epitaxy
Metals and Materials International - Tập 9 - Trang 121-127 - 2003
Using empirical embedded atom method (EAM) potential, activation barriers of adatom diffusion on the surface, diffusion along the step edge, and island corner diffusion are calculated for metal (111) surface (Pt, Ag) and the behavior of those barriers is investigated with respect to lattice strain. Based on the calculated barriers, we perform the kinetic Monte Carlo simulation for monolayer island......
Optimization of additive compositions for anode in Ni-MH secondary battery using the response surface method
Metals and Materials International - Tập 15 - Trang 421-425 - 2009
We optimized the composition of additives for the anode in a Ni-MH battery using the response surface method (RSM) to improve the electrode discharge capacities. When the amount of additives was small, the discharge characteristics of the electrode were degraded by charge-discharge cycling due to the low binding strength among the alloy powders and the resultant separation of the powder from the e......
Nitrogen Ions Implantation in W-Based Quad Alloy: Structure, Electrical Resistivity, Surface Roughness and Vickers Hardness as a Function of Ion Dose
Metals and Materials International - Tập 27 - Trang 3342-3358 - 2020
Five W-alloy specimens, containing 8.57% Ni, 6.34% Cu, and 1.34% Mo, were bombarded with 5.2 MeV singly charged nitrogen ions. The ions dose range was 5 × 1014–1 × 1016 ions/cm2. XRD patterns portrayed diffraction peaks of pure W as well as of Cu0.4W0.6, MoNi4, and Ni4W phases. Harris analysis showed that the preferentially oriented planes depend on the nitrogen ions dose. The structural parameter......
Growth and dislocation distribution of single Si1-xGex/Si(001) epilayer structures grown by gas source molecular beam epitaxy
Metals and Materials International - Tập 4 - Trang 1001-1005 - 1998
Single Si1-xGex epilayer on Si buffer layer (~100 nm) was grown by gas source molecular beam epitaxy (GS-MBE) at 640°C. Samples were investigated by transmission electron microscopy. For all the samples investigated, the misfit dislocations were irregularly distributed along the [110] and [110] directions. As the Ge content, x, in Si1-xGex/Si epilayers (x≤0.15) increased, the distribution of dislo......
Effect of ductility on dry sliding wear of medium carbon steel under low load conditions
Metals and Materials International - Tập 5 - Trang 267-271 - 1999
The room-temperature dry sliding wear behavior of AI SI 1045 steel has been investigated with the aim of clarifying the effect of ductility on wear Sliding wear tests were carried out in the air using a pin-on-disk wear tester with loads ranging from 4 to 12 N The specimen with higher ductility showed a lower wear rate than the specimen with lower ductility though their hardness values are similar......
Grain refining performance of Al-B master alloys with different microstructures on Al-7Si alloy
Metals and Materials International - Tập 19 Số 2 - Trang 367-370 - 2013
$$\left\{ {10\bar 12} \right\}$$ twinning behavior in magnesium single crystal
Metals and Materials International - - 2013
The effect of compaction temperature and pressure on the pores in nanostructured metal compacts prepared by magnetic pulsed compaction
Metals and Materials International - Tập 9 - Trang 375-378 - 2003
The pore behavior of nano Al compacts prepared by magnetic pulsed compaction in a temperature range from 20°C to 300°C and under pressure of 0.7 and 1.6 GPa was studied by small angle neutron scattering (SANS) analysis. The size distribution and volume fraction of pores in the compact were determined by corrected scattering curves using a direct model fitting, under the assumption that the pores w......
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